I have written Verilog code that allows real$-$time input of arbitrary characters using the cursor, displaying them on a $2-$line $(16$x$2$display window$)$LCD across LINE$1$and LINE$2.$Please modify my code by adding an input to allow the cursor to switch between LINE$1$and LINE$2$in the Verilog code.

$```$

module LCD$\_$controller$($rst$,$ CIk. Icd$\_$e$.$ Icd$\_$rs$,$ Icd$\_$rw$.$ Icd$\_$data; Ied, number$\_$btn$,$ control$\_$btn$)$:

input rst$.$ clk;

input $[9$:$0]$ number$\_$btn;

input $[1$:$0]$ control$\_$btn:

wire $[9$:$0]$ rumber$\_$btn$\_$t:

wite $[1$:$0]$ control$\_$btn$\_$t:

oneshot$\_$unlversal #$(.$w$10$tH$(12))$ A$1($clk$.$ rst$.\{$number$\_$btn$[9$:$0].$ control$\_$btn$[1$:$0]\}.\{$number$\_$btn$\_$t$\{9$:$0].$ control$\_$bin$\_$t$[1$:$0]\})$:

output Icd$\_$e$,$ Iod$\_$rs$,$ Icd$\_$rm:

output reg $[7$:$0]$ Iod$\_$data:

output reg $[7$:$0]$ led:

wire lod$\_$e:

reg led$\_$rs$.$ lod$\_$rw:

feg $[7$:$0]$ ont:

reg $[2$:$0]$ state:

parameter DELAY $=3\text{'}$b$000.$

FUNCTION$\_$SET $=3\text{'}$b$001,$

DISP$\_$ONOFF $=3\text{'}$b$010,$

ENTRY$\_$MODE $=3\text{'}$b$011,$

SET$\_$ADORESS $=3\text{'}$b$100,$

DELAY$\_$T $=3\text{'}$b$101.$

WRITE $=3\text{'}$b$110,$

CURSOR $=3\text{'}$b$111$;

always @$($posedge clk or negedge rst$)$

begin

if$($Irst$)$ begin

state $<=$ DELAY:

led $<=8\text{'}$b$0000\_0000$:

end

else begin

case$($state$)$

DELAY : bEgin

if$($cnt $==70)$ state $<=$ FUNCTION$\_$SET:

led $<=8\text{'}$b$1000\_0000$:

$``````$

FUNCTION$\_$SET : begin

if$($cnt $=30)$ state $<=$ DISP$\_$ONOFF;

led $<=8\text{'}$b$0100\_0000$:

end

DISP$\_$ONDFF : begin

if$($cnt $=30)$ state $<=$ ENTRY$\_$MODE;

led $<=8*$b$0010\_0001$;

end

ENTRY$\_$MODE : begin

if$($cnt $=30)$ state $<=$ SET$\_$ADORESS:

led $<=8\text{'}$b$0001\_0000$;

end

SET$\_$ADORESS : begin

if$($cnt $=100)$ state $<=$ DELAY$\_$Ti

led $<=8\text{'}$b$0000\_1000$;

end

DELAY$\_$T : begin

state $<=|$number$\_$btn$\_$t $?$ HRITE : $($lcontrol$\_$btn$\_$t $?$ CURSOR : OELAY$\_$T$)$;

led $<=8\text{'}$b$0000\_0100$;

end

MRITE: begin

If$($cnt $==30)$ state $<=$ DELAY$\_$T:

led $<=8\text{'}$b$0000\_0010$:

end

CURSOR: begin

if$($cnt $==30)$ state $<=$ DELAY$\_$T:

led $<=8\text{'}$b$0000\_0001$:

end

endcase

end

end

always $($posedge clk or negedge rst$)$

begin

if$($Irst$)$

cnt $<=8\text{'}$b$0000\_0000$;

else

begin

case$($state$)$

DELAY :

if$($cnt $>=70)$ ont $<=0$;

else cnt $<=$ cnt$+1$;

$``````$

FUNCTION$\_$SET :

if$($cnt $>=30)$ cnt $<=0$;

else cnt $<=$ cnt $+1$;

OISP$\_$ONOFF :

if$($cnt s$=30)$ cnt $<=0$;

else cnt $<=$ cnt $+1$;

ENTRY MODE:

if $($cnt $>=30)$ cnt $<=0$;

else cnt $<=$ cnt $+1$;

SET$\_$ADDRESS :

if$($cnt $>=100)$ cnt $<=0$;

else ont $<=$ cnt $+1$:

OELAY$\_$T :

cnt & & ;

MRITE:

if$($cnt $>=30)$ cnt $<=0$;

else cnt $<=$ cnt $+1$:

CURSOR :

if$($cnt $>=30)$ cnt $<=0$:

else cnt $<=$ cnt $+1$;

endcase

end

end

always f$($posedge clk or negedge rst$)$

begin

if$($lrst$)$

$\{$lod$\_$rs$,$ led$\_$ri$,,$ Icd$\_$data$\}<=10\text{'}$b$0\_0\_0000\_0001$;

else

begin

case$($state$)$

FUNCTION$\_$SET :

$\{$lcd$\_$rs$,$ Icd$\_$rm$,$ Icd$\_$data$\}<=10\text{'}$b$0\_0\_0011\_1000$;

OISP$\_$ONOFF :

$\{$lod$\_$rs$,$ Icd$\_$rw$,$ Icd$\_$data$\}\}=10\text{'}$b$0\_0\_0000\_1111$:

ENTRY$\_$MOOE:

$\{$lcd$\_$rs$,$ lcd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$0\_0\_0000\_0110$;

SET$\_$ADLRESS :

$\{$lcd$\_$rs$,$ Icd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$0\_0\_0000\_0010$;

DELAY$\_$T :

$\{$lod$\_$rs$,$ icd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$0\_0\_0000\_1111$:

$``````$

if$($cnt $==20)$ begin

case$($number$\_$btn$)$

$10\text{'}$b$1000\_0000\_00$:$\{$led$\_$rs$,$ Icd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$1\_0\_0011\_0001$;

$10\text{'}$b$0100\_0000\_00$ : $\{$lcd$\_$rs$,$ Icd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$1\_0\_0011\_0010$;

$10\text{'}$b$0010\_0000\_00$ : $\{$Icd$\_$rs$,$ Icd$\_$riw, Icd$\_$data$\}\}=10\text{'}$b$1\_0\_0011\_0011$;

$10\text{'}$b$0001\_0000\_00$ : $\{$lcd$\_$rs$,$ Ict$\_$rm$,$ Icd$\_$data$\}\}=10.$b$1\_0\_0011\_0100$;

$10\text{'}$b$0000\_1000\_00$ : $\{$lcd$\_$rs$,$ Icd$\_$rm$,$ Icd$\_$data$\}<=10\text{'}$b$1\_0\_0011\_0101$;

$10\text{'}$b$0000\_0100\_00$ : $\{$lod$\_$rs$,$ Icd$\_$rw; Icd$\_$data$\}\}=10\text{'}$b$1\_0\_0011\_0110$;

$10\text{'}$b$0000\_0010\_00$ : $\{$lcd$\_$rs$,$ Icd$\_$rw$,$ Icd$\_$data$\}<=10\text{'}$b$1\_0\_0011\_0111$;

$10\text{'}$b$0000\_0001\_00$ : $\{$lcd$\_$rs$,1$cd$\_$rw$,$ Icd$\_$data<

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